Synonyms of vitally

3 Syllables
pressingly, perforce
4 Syllables
cardinally, exigently, willy-nilly, exceedingly, principally, undoubtedly, importantly, accordingly, naturally, extremely, dominantly, prevalently, prevailingly, consequently, essentially
5 Syllables
inescapably, compulsorily, ineluctably, irresistibly, unpreventably, unquestionably, indubitably, positively, necessarily, fundamentally, inexorably, significantly
6 Syllables
determinately, axiomatically, incontrovertibly, automatically, prohibitively